{"schemaVersion":1,"slug":"neutral-point-clamped-inverter","name":"Neutral-point-clamped inverter","kind":"symbol","abbreviation":"NPC","aliases":["three level NPC","diode clamped inverter"],"category":"microgrid-systems","drawingTypes":["Schematic","SLD"],"referenceFamilies":["Manufacturer"],"summary":"A multilevel switching arrangement using the documented split DC link and neutral-point clamping paths.","description":["A multilevel switching arrangement using the documented split DC link and neutral-point clamping paths.","On a schematic, identify the split-link midpoint, clamping devices and phase-leg switches and trace the phase output and DC-link balancing/control references. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.","NPC identifies a specific multilevel arrangement; active-NPC variants replace parts of the clamping arrangement and need separate device documentation.","The preview is a conceptual topology reference rather than a complete power-stage circuit. Switching sequences, magnetic design, component selection and control/protection details belong in the equipment design documentation."],"readingNotes":["Identify the split-link midpoint, clamping devices and phase-leg switches.","Trace the phase output and DC-link balancing/control references."],"drawingChecklist":["Label the split-link midpoint, clamping devices and phase-leg switches.","Cross-reference the phase output and DC-link balancing/control references.","Add the selected device or circuit documentation revision, power/reference connections and project signal convention."],"distinction":"NPC identifies a specific multilevel arrangement; active-NPC variants replace parts of the clamping arrangement and need separate device documentation.","facts":[{"label":"Common schematic mnemonic","value":"NPC — descriptive only; project/device documentation defines reference designations."},{"label":"Terminal / interface focus","value":"The split-link midpoint, clamping devices and phase-leg switches"},{"label":"Artwork scope","value":"Original conceptual topology block; not a complete switch-level circuit."}],"references":[{"sourceId":"pub-electronics-infineon-npc","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}],"related":["three-phase-voltage-source-inverter","power-converter"],"artwork":"electronics-power-npc","publishedOn":"2026-10-14","updatedOn":"2026-10-14","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/neutral-point-clamped-inverter","illustration":{"url":"https://eloragrid.ai/library/illustrations/neutral-point-clamped-inverter.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-electronics-infineon-npc","title":"Multilevel NPC converter application context","publisher":"Infineon Technologies","url":"https://www.infineon.com/product-information/sic-modules-for-ups-design-and-efficiency-guide","type":"manufacturer","scope":"Public explanation of two-level and neutral-point-clamped converter contexts. The catalogue indicates a split-link/clamping concept; it is not an exact standard circuit or a selected module internal diagram.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}]}